From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frans Klaver Subject: [PATCH v4 2/2] power: reset: document LTC2952 poweroff support Date: Thu, 9 Oct 2014 16:50:42 +0200 Message-ID: <1412866242-6474-3-git-send-email-frans.klaver@xsens.com> References: <1412866242-6474-1-git-send-email-frans.klaver@xsens.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from filter1.ibarracuda.nl ([83.247.7.10]:45175 "EHLO filter1.ibarracuda.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755584AbaJIOwd (ORCPT ); Thu, 9 Oct 2014 10:52:33 -0400 In-Reply-To: <1412866242-6474-1-git-send-email-frans.klaver@xsens.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Sebastian Reichel Cc: =?UTF-8?q?Ren=C3=A9=20Moll?= , Tjerk Hofmeijer , Frans Klaver , Dmitry Eremin-Solenikov , David Woodhouse , Grant Likely , Rob Herring , Guenter Roeck , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org =46rom: Ren=C3=A9 Moll Signed-off-by: Ren=C3=A9 Moll Signed-off-by: Tjerk Hofmeijer Signed-off-by: Frans Klaver --- .../bindings/power/reset/ltc2952-poweroff.txt | 31 ++++++++++++++= ++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/reset/ltc29= 52-poweroff.txt diff --git a/Documentation/devicetree/bindings/power/reset/ltc2952-powe= roff.txt b/Documentation/devicetree/bindings/power/reset/ltc2952-powero= ff.txt new file mode 100644 index 0000000..c3f3d9e --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.tx= t @@ -0,0 +1,31 @@ +Binding for the LTC2952 PowerPath controller + +This chip is used to externally trigger a system shut down. Once the t= rigger +has been sent, the chips watchdog has to be reset to gracefully shut d= own. If +the Linux systems decides to shut down, it powers off the platform via= the +poweroff signal. + +Required properties: + +- compatible: Must be: "lltc,ltc2952" +- watchdog-gpios: phandle + gpio-specifier for the GPIO connected to t= he + chip's watchdog line +- poweroff-gpios: phandle + gpio-specifier for the GPIO connected to t= he + chip's kill line + +Optional properties: + +- trigger-gpios: phandle + gpio-specifier for the GPIO connected to th= e + chip's trigger line. If this property is not set, the + trigger function is ignored and the chip is kept alive + until an explicit kill signal is received + +Example: + +ltc2952 { + compatible =3D "lltc,ltc2952"; + + trigger-gpios =3D <&gpio0 1 GPIO_ACTIVE_LOW>; + watchdog-gpios =3D <&gpio1 2 GPIO_ACTIVE_HIGH>; + poweroff-gpios =3D <&gpio0 2 GPIO_ACTIVE_LOW>; +}; --=20 2.1.0